likwid/backend/migrations/20260125205600_advanced_voting.sql
Marco Allegretti 910a6465f2 Initial commit: Likwid governance platform
- Backend: Rust/Axum with PostgreSQL, plugin architecture
- Frontend: Astro with polished UI
- Voting methods: Approval, Ranked Choice, Schulze, STAR, Quadratic
- Features: Liquid delegation, transparent moderation, structured deliberation
- Documentation: User and admin guides in /docs
- Deployment: Docker/Podman compose files for production and demo
- Demo: Seeded data with 3 communities, 13 users, 7 proposals

License: AGPLv3
2026-01-27 17:21:58 +01:00

46 lines
2 KiB
SQL

-- Advanced voting methods support
-- Add voting method enum type
DO $$ BEGIN
CREATE TYPE voting_method_type AS ENUM ('approval', 'ranked_choice', 'quadratic', 'star');
EXCEPTION
WHEN duplicate_object THEN null;
END $$;
-- Ranked votes table for ranked choice voting
CREATE TABLE IF NOT EXISTS ranked_votes (
id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
proposal_id UUID NOT NULL REFERENCES proposals(id) ON DELETE CASCADE,
voter_id UUID NOT NULL REFERENCES voting_identities(id),
option_id UUID NOT NULL REFERENCES proposal_options(id) ON DELETE CASCADE,
rank INTEGER NOT NULL,
created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
UNIQUE(proposal_id, voter_id, option_id),
UNIQUE(proposal_id, voter_id, rank)
);
-- Quadratic votes table (stores credit allocation)
CREATE TABLE IF NOT EXISTS quadratic_votes (
id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
proposal_id UUID NOT NULL REFERENCES proposals(id) ON DELETE CASCADE,
voter_id UUID NOT NULL REFERENCES voting_identities(id),
option_id UUID NOT NULL REFERENCES proposal_options(id) ON DELETE CASCADE,
credits INTEGER NOT NULL CHECK (credits >= 0),
created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
UNIQUE(proposal_id, voter_id, option_id)
);
-- Star rating votes (0-5 stars per option)
CREATE TABLE IF NOT EXISTS star_votes (
id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
proposal_id UUID NOT NULL REFERENCES proposals(id) ON DELETE CASCADE,
voter_id UUID NOT NULL REFERENCES voting_identities(id),
option_id UUID NOT NULL REFERENCES proposal_options(id) ON DELETE CASCADE,
stars INTEGER NOT NULL CHECK (stars >= 0 AND stars <= 5),
created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
UNIQUE(proposal_id, voter_id, option_id)
);
CREATE INDEX IF NOT EXISTS idx_ranked_votes_proposal ON ranked_votes(proposal_id);
CREATE INDEX IF NOT EXISTS idx_quadratic_votes_proposal ON quadratic_votes(proposal_id);
CREATE INDEX IF NOT EXISTS idx_star_votes_proposal ON star_votes(proposal_id);